如图,在直角坐标系
中,点
,点
为
轴正半轴上的一个动点,以
为直径作圆
交
轴于点
,圆
与直线
交于点
,连接
,过点
作
交圆
于点
,连接
.
是矩形;
(2)设矩形
的面积为
,试求
关于
的函数解析式,写出
的取值范围.并判断
是否存在最大值或最小值?若存在,求出这个最大值或最小值,若不存在,请说明理由;
(3)当
时,求点
移动路线的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c5195104fddbf58150b310e442183b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d93b24dee2e45c97967316a0ac21ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1cfcdee9a00fff9bab9e428a331484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eaac8fc1b65fa9660db21a01f84c674f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721177521ef7673360990911d0b7c515.png)
(2)设矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721177521ef7673360990911d0b7c515.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be48cd4158fb76190935ab143de02ba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
2022·河北石家庄·模拟预测 查看更多[2]
更新时间:2023-09-14 19:50:47
|
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】矩形
中,
,
,
是
边上一点,
且
.
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753647033712640/2773386360889344/STEM/af8ebe88142a4137b3a17d727a5f986a.png?resizew=472)
(1)如图1,当
在
边上时,求
的长;
(2)如图2,若
,求
的值;
(3)如图3,
为
的中点,直接写出
的最小值为_________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ee826937d2add7a93aaa1422f8b736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/992a19339adac3a2f1aab1fbc11b1c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b70c662d45c1b741ea5ed7a31007cc.png)
![](https://img.xkw.com/dksih/QBM/2021/6/29/2753647033712640/2773386360889344/STEM/af8ebe88142a4137b3a17d727a5f986a.png?resizew=472)
(1)如图1,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e0212491e4b2d7525de9a87fab3a6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af614752bd8c370f34199c8635893496.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53330c107f8245290a5a42c3d356acd.png)
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【推荐2】如图1,在△ABC中,AB=AC=5,BC=8,∠PDQ的顶点D在BC上,DQ经过点A,DP交AB于点E,且BD=3,∠PDQ=∠B.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/2c6a43cc-d9ed-4668-84bd-6c32a78123fe.png?resizew=482)
(1)BE的长是______;
(2)如图2,把∠PDQ绕顶点D按逆时针方向旋转,在旋转过程中始终保持∠PDQ的开口在BC的上方,且DP不与DB重合,DQ交AB于点G,交CA的延长线于点F(点F不与点A重合),设BE=x,AG=y.
①请说明△BDE与△CFD相似;
②请直接写出y与x的函数关系式,并写出自变量x的取值范围;
③是否存在以∠GFA或∠FGA为顶角的等腰△AGF?若存在,请求出BE的长;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/21/2c6a43cc-d9ed-4668-84bd-6c32a78123fe.png?resizew=482)
(1)BE的长是______;
(2)如图2,把∠PDQ绕顶点D按逆时针方向旋转,在旋转过程中始终保持∠PDQ的开口在BC的上方,且DP不与DB重合,DQ交AB于点G,交CA的延长线于点F(点F不与点A重合),设BE=x,AG=y.
①请说明△BDE与△CFD相似;
②请直接写出y与x的函数关系式,并写出自变量x的取值范围;
③是否存在以∠GFA或∠FGA为顶角的等腰△AGF?若存在,请求出BE的长;若不存在,请说明理由.
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解答题-问答题
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较难
(0.4)
【推荐1】在四边形
中,
,
,
,
,
,点P从点B开始沿
向点C以每秒
的速度移动,点Q从点D开始沿
以每秒
的速度移动,设运动时间为t秒,连接
.
的长度是__________
;
(2)当
________时,线段
平分
;
(3)当
________时,
;
(4)当t为何值时,四边形
的面积是
;(请说明理由)
(5)当t为何值时,Q在
的中垂线上.(请说明理由)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dceb5cc71fc50f20649f6b9535fd914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b79850d6b00a67110e77a33d1c46b5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/720cf0c17cd163f804497aeee03b5828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b2589e4bb57ab742462dd935669dec5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d0ab561d0c9bb9099772c596af8bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9efa9fbcfb9595e2f031aa691db4564b.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6ede9761b5b90f8dc137708e1ee90f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902f24325565a9dd95128a633a240da2.png)
(4)当t为何值时,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ba8f60b5b1c1e342ed0851ed3bb7891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0338dbafe353efbd4724d64292910810.png)
(5)当t为何值时,Q在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
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较难
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真题
解题方法
【推荐2】问题提出
(1)如图①,已知△ABC,请画出△ABC关于直线AC对称的三角形.
问题探究
(2)如图②,在矩形ABCD中,AB=4,AD=6,AE=4,AF=2,是否在边BC、CD上分别存在点G、H,使得四边形EFGH的周长最小?若存在,求出它周长的最小值;若不存在,请说明理由.
问题解决
(3)如图③,有一矩形板材ABCD,AB=3米,AD=6米,现想从此板材中裁出一个面积尽可能大的四边形EFGH部件,使∠EFG=90°,EF=FG=
米,∠EHG=45°,经研究,只有当点E、F、G分别在边AD.AB、BC上,且AF<BF,并满足点H在矩形ABCD内部或边上时,才有可能裁出符合要求的部件,试问能否裁得符合要求的面积尽可能大的四边形EFGH部件?若能,求出裁得的四边形EFGH部件的面积;若不能,请说明理由.
(1)如图①,已知△ABC,请画出△ABC关于直线AC对称的三角形.
问题探究
(2)如图②,在矩形ABCD中,AB=4,AD=6,AE=4,AF=2,是否在边BC、CD上分别存在点G、H,使得四边形EFGH的周长最小?若存在,求出它周长的最小值;若不存在,请说明理由.
问题解决
(3)如图③,有一矩形板材ABCD,AB=3米,AD=6米,现想从此板材中裁出一个面积尽可能大的四边形EFGH部件,使∠EFG=90°,EF=FG=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://img.xkw.com/dksih/QBM/2016/8/16/1574230160826368/1574230167461888/STEM/e8859d9e24cb4b379bc5496d54d2ed1d.png)
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解答题-证明题
|
较难
(0.4)
【推荐1】如图,在锐角三角形
中,
,以
为直径的
分别交
于点
,连接
.
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896561250803712/2977087175909376/STEM/2004a9cd-3cdc-4aa8-aaf1-3fbfd1c04b64.png?resizew=152)
(1)若
,求
的度数;
(2)求证:
;
(3)若
半径为
,
,求四边形
的面积(用含
的代数式表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4333a891762438ab8fbcffacc3a9feb4.png)
![](https://img.xkw.com/dksih/QBM/2022/1/17/2896561250803712/2977087175909376/STEM/2004a9cd-3cdc-4aa8-aaf1-3fbfd1c04b64.png?resizew=152)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d777d15cd733338ecfd0ea63819f62c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c436f108fd4921dae15ecff19270237e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d2f2e41907e30a4a14035f55e3c37c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3387a23d14e10d69792760eb97904782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
|
较难
(0.4)
【推荐2】如图1,
中,
的平分线和外角
的平分线交于点E,我们把
叫做
中
的好望角.
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899481614794752/2900505875464192/STEM/3c9d0f04-ca83-48d9-859d-0b37994495e9.png?resizew=542)
(1)如图1,已知
,点D是BC延长线上的一点,
是
中
的好望角,
,
,求
的度数;
(2)如图2,四边形ABCD内接于
,且AC是
的直径,点E是弧AD上的动点,弧
弧BD,CD和BE的延长线交于点F,连接DE,AE,当
是
中
的好望角时.
①求
的度数;
②求证
;
③若
,
,求
的直径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdb8eca20ce2c918ea4034ea15210c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://img.xkw.com/dksih/QBM/2022/1/21/2899481614794752/2900505875464192/STEM/3c9d0f04-ca83-48d9-859d-0b37994495e9.png?resizew=542)
(1)如图1,已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d67caa956042197d36d651c4ec1a75b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871a762469393cdd22f15aa49ebb8f9.png)
(2)如图2,四边形ABCD内接于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e8c257f5615d30660cef4157c6b273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
②求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3767efa8adfb71001ad39df9560cbf6a.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b515965c22d2950b592c096c6e3bdfd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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解答题-证明题
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较难
(0.4)
名校
【推荐1】在菱形ABCD中,对角线AC、BD相交于点O,过点O直线EF分别交DA、BC的延长线于点E、F,连接BE、DF.
(1)求证:△AOE≌△COF;
(2)若EF=BD,BE=8,BF=16,求菱形ABCD的面积;
(3)若EF⊥AB,垂足为G,OB=3
AG,求
的值.
(1)求证:△AOE≌△COF;
(2)若EF=BD,BE=8,BF=16,求菱形ABCD的面积;
(3)若EF⊥AB,垂足为G,OB=3
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb3efbaf44b99ee376e0ff06505aa2d1.png)
![](https://img.xkw.com/dksih/QBM/2021/7/10/2760974721744896/2782398521335808/STEM/e147a63897524cb2b94f6084d2eff1be.png?resizew=211)
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解答题-证明题
|
较难
(0.4)
【推荐2】综合实践
问题情境
在图
所示的直角三角形纸片
中,
是斜边
的中点.数学老师让同学们将
绕中点
做图形的旋转实验,探究旋转过程中线段之间的关系.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/8ddef10d-990e-4647-a25f-4c821e89feda.jpg?resizew=638)
解决问题
(1)“实践小组”的同学们将
以点
为中心按逆时针旋转,当点
的对应点
与
重合时,
与它的对应边
交于点
.他们发现:
.请你帮助他们写出证明过程.
数学思考
(2)在图
的基础上,“实践小组”的同学们继续将
以点
为中心进行逆时针旋转,当
的对应边
时,设
与
交于点
,
与
交于点
.他们认为
.他们的认识是否正确?请说明理由.
再探发现
(3)解决完上面两个问题后,“实践小组”的同学们在图
中连接
,他们认为
,
与
也具有一定的数量关系.请你写出这个数量关系______.(不要求证明)
问题情境
在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/27/8ddef10d-990e-4647-a25f-4c821e89feda.jpg?resizew=638)
解决问题
(1)“实践小组”的同学们将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/237e26e2d6022145c440d7135874d125.png)
数学思考
(2)在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2da2aef5e6b83aa7f674f1164da81a61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737bc35da650eda3825d29799b5f86f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b96467ebb176e76e6e920aade399209.png)
再探发现
(3)解决完上面两个问题后,“实践小组”的同学们在图
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
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解答题-问答题
|
较难
(0.4)
【推荐3】【问题探究】
(1)如图1,在矩形
中,
,点
、
分别为边
、
上的点,且
,
,P为边
上一动点,连接
、
,则
的最小值为______.
(2)如图2,在矩形
中,
,
,点
、
分别在边
和
上,连接
,
于M,求
的长.
【问题解决】
(3)某市进行绿化改造,美化生态环境.如图3,将一块四边形的空地
改造成了供市民休闲锻炼的公园.已知:在四边形
中,
,
,
,
米,
米,在公园的
边上有一个出口
,经测量
,为了方便市民,现计划在公园的
边和
边上分别建一个休息亭
和
,然后铺设观景道
、
、
,并且
,若要使这三条观景道的距离和最小(即
最小),请求出休息亭
距离点
多远?并求出
的最小值.(小路面积忽略不计,结果保留根号)
(1)如图1,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faffe3765c15f53305516895aa595a9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f541f7ae7c39082d202efd28805c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc28533be6bacfff4c46cc792603247d.png)
(2)如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8de4a54cc7818be87a239f6de5f5d05b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
【问题解决】
(3)某市进行绿化改造,美化生态环境.如图3,将一块四边形的空地
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe4a8ae40380880ac98bbd38dc075a60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667c50b897a3e209018f0ee09d37e73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2112a1979fac3466036071a3c125114b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04ddb2b4ebda1e8edf3ce24900505a3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9070e90862cd17e5007edb2e9e5374e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9eda2f333d87d5bc0061d30c1f36d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9eda2f333d87d5bc0061d30c1f36d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/0a05d800-63b0-492a-ae0e-d71f44b5825b.png?resizew=488)
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